The average daytime temperatures in Sydney in September are around 16°C while high temperatures can hit peaks of 20°C on warmer days. Although the weather is warming in September, Sydney can experience some chilly westerly winds this month.
As with most of the months, September is generally a sunny month in Sydney. Travellers can usually expect an average of 9 hours sunshine per day with a 33% chance of a sunny day.
Spring in the city does mean more rain than at other times of the year, but it usually clears up quickly. The average rainfall expected throughout the month is 65mm which is usually spread over 11 wet days, for a 32% chance of a rainy day
For those who want to go in the sea whilst in Sydney, whether to swim or to ride the waves on Bondi Beach, the average temperature of the sea in August is not as high as at other times of the year, but is still very pleasant at 18°C. This is comfortable for most people to swim in.
Rainfall is low throughout the country, even in cities like Sydney and Perth, which see heavier rain throughout the winter. However, although September is still the dry season in the tropical north, this month is not as dry as June through to August, so visitors might experience building humidity.
In September Sydney generally has moderate temperatures with maximum daytime temperatures around 22°C (71°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.
In September length of day is gradually starting to increase by approximately 60 minutes. The shortest day is 1 September and offers 11 hours 22 minutes of daylight, sunrise is 6:15 AM and sunset is 5:38 PM and the longest day is 30 September with 12 hours 22 minutes of daylight, sunrise is 5:35 AM and sunset is 5:57 PM